Means for controlling the supply of supplementary liquids to power generating devices



Nov. 1, 1938,

MEANS L. B. KIM-BALL Ilium FOR CONTROLLING THE SUPPLY OF SUPPLEMENTARYLIQUIDS TO POWER GENERATING DEVICES Original Filed July 28, 1936 2Sheets-Sheet 1 INVENTOR.

B/ /MBALL 5 ATTORNEYSJ,

. L. B. KIMBALL 7 2,135,431 MEANS FOR CONTROLLING THE SUPPLY OFSUPPLEMENTARY LIQUIDS TO POWER GENERATING DEVICES Nov. 1, "1938.

Original Filed July 28, 1936 2 Sheets-Sheet 2 INVENTOR. L E05! K B LL.

BY fix? Wis ATTORNEY:

Patented Nov. 1, 1938 UNITED STATES PATENT OFFICE Leo B. Kimball, NewHaven, Conn., assignor to Fuel Development Corporation, a corporation ofDelaware Application July 28, 1936, Serial No. 92,980 Renewed September27, 1938 v 1 Claim.

This invention relates to the manipulation of valves that are useful forvarious purposes where it is necessary to supply some fractional part ofa supplementary ingredient or liquid to a stream or current of somefluid or combustible mixture that may be used for any desired purpose,such as with liquid fuels supplied to internal combustion engines, asthrough the use of the Well-known carburetor.

This invention is particularly applicable to the supply of liquids tothe intake conduits or apparatus and to the control of the quantity andcondition of fuels for driving internal combustion automobile engines orengines of similar nature.

The present invention is a development of the prior methods andapparatus for the fractional supply of fluids comprised in my priorUnited States Patent No. 1,974,071, granted September 18, 1934, and No.1,974,072 of same date.

The present invention also may be used for the purpose of adding anysuitable liquid to the intake passages of internal combustion enginessuch as automobile engineswhere it may be desired to add such liquids incertain proportions or at certain times during the operation of theengines, particularly under various atmospheric conditions and variousdegrees of power output.

For a detailed description of one form of the apparatus which hasheretofore been found to be useful, reference may be had to thefollowing specification and to the accompanying drawings forming a partthereof in which- Fig. 1 is a schematic view in elevation of my improvedapparatus showing how it is connected with an automobile engine forsupplying liquid to the intake thereof;

Fig. 2 is a vertical sectional view of the valve used as a part of saidapparatus and indicating the internal arrangement thereof;

Fig. 3 is a plan view of the means for connecting the accelerator buttonwith the throttle valve;

Fig. 4 is a vertical sectional view of the carburetor of a modernautomobile engine indicating how the tube for supplying liquid theretois attached to the carburetor which includes a Venturi tube; and

Fig. 5 is a detailed view, in elevation, of the cam arrangement of Fig.2.

Referrim to Fig. l of the drawings, the numeral l indicates thecarburetor for the automobile engine. This is lndicated as being themodern so-called down draft carburetor which is usually provided with acylindrical portion 2 as an air cleaner. That contains finely divided orfibrous non-combustible material for filtering the air and extractingparticles of dust and foreign matter therefrom. The numeral 3 indicatesthe outer end of the shaft of the throttle valve to which is attached alever or crank arm 4 on the free end of which is pivoted one end of arod 5 extending to the accelerator control arm 6 connected with the footlever or accelerator button I. I indicates a transverse shaft on one endof which the arm 6 is fixed (Fig. 3) and to which the button 'I isconnected by the arm 1".

The numeral 8 indicates the intake manifold of the automobile engine and9 the exhaust manifold thereof. The numeral it? indicates a tank orreservoir adapted to contain the fluid being supplied to the engine andis provided with a pipe ll leading to the control valve l2. Said controlvalve carries at its lower end as will hereinafter be described two armsor levers l3 and it. The arm l3 is'pivotally connected with the rod iii,the right-hand end of which is also connected with the rod 5 operated bythe accelerator pedal or button i. The arm I4 is connected with the wireor -flexible shaft [6 which runs to the dash of the automobile asindicated in Fig. 1, and terminates in. a control button or knob l!which may be manipulated by the operator of the car or engine to changethe position of the arm l4 and the cam member l8 within the valve casingl2 (Fig. 2).

Referring now to the valve parts, the cam member is (Fig. 5) is carriedon the end of a tubular member I9 to which the arm I4 is attached. Anoscillation of the arm M will obviously change the position of the cammember 18 relative to the cam members or followers 20 projecting fromthe yoke or similar support 2|. The latter support 2i is carried on oneend of the central shaft 22 to the outer end of which the arm 13 isattached. Resulting from this latter connection a movement of the rodiii to oscillate the arm l3 will move the yoke or support 2| and rotatethe cam members or followers 20. The latter are located on the yoke orsupport 2| at diametrically opposite points so as to contact with twoinclined portions l8 on the cam member l8, one of which is illustratedin Fig. 5. Bearing upon the washer 23', held in position by the nut 24'on the valve stem 24, is a helical compressionspring 23 which is seatedat its upper end on the casing. This spring is surrounded by a bellows25, the lower The numeral 41 indicates the choke valve which end ofwhich also rests upon the washer 23' and the upper end is sealed to thebellows plate 23' which is adjacent the end of the spring 23. The valvestem 24 carries a tapering valve member .23 which is positioned to openor close an opening 21' in the member 21. The extending stud 23 whichhas screw-threaded connection with the valve member 23 is slightlytapering as at '23 and is adapted to oscillate within an opening isscrewed up tightly on to the end portion l2 of the casing l2. Thatadjusting device is similar to the one described in my prior patentsabove noted.

The casing I2 is provided with an inlet (or outlet) passage 36 and anoutlet (or inlet) passage 31. The passage 33 is connected withthe' spaceabove the member 3| by a small drilled hole 33 and the outlet passage 31is connected with the space below the member 2'| by a small drilled hole33.

Referring now to Fig. 4 which illustrates conventionally a form ofcarburetor for automobile engines, it will be noted that the outlet ofthe air cleaner 2 is connected with the main por-' tion of the downdraft carburetor.

This carburetor is provided with the venturi or restricted portion. 40and with the gasoline injector tube 4| which leads through the passage42 connected with the interior of the carburetor float valve chamber 43.This chamber has an inlet pipe 44 running from the gasoline pump orother supply device and the admission into the float valve chamber 43 iscontrolled in the usual way, by the position of the float 45 so that thelevel of the gasoline remains substantially constant at 46.

is normally connected with a knob (not shown) on the dash so that thechoke valve may be used in starting the engine. The numeral 3 abovereferred to, indicates the throttle valve which, as above stated, isconnected with a crank arm 4 and a rod 5 which is connected with theaccelerator or throttle valve control I. The numeral 48 indicates a piperunning from the outlet of the control valve l2 as above referred to.

Referring now to the operation of this device, it will be seen that theVenturi tube portion 40 of the carburetor I produces the usual action insuch tubes andcauses a reduced lateral pressure or suction at the pointwhere the pipe and con- 'a,1ae,4a1 Y,

two then flows to the intake manifold 3. When the throttle valve 3 isopen to any considerable extent. the flow of the combustible mixturethrough the carburetor will be correspondingly rapid and accordingtohydraulic principles the reduced pressure or suction produced at thepoint 43 at the end of the passage or pipe 43 will vary in directproportion thereto. This has the effect of drawing through the tube 48from the valve l2 the anti-knock or other liquid that may be-controlledby the operation of said valve. However. the exact amount of flowthrough said pipe depends also upon the amount that the liquid isallowed to flow through the valve I: by reason of the portion 23 and themetering portion 33 thereof. Since the said valves are controlled-in twoways, that is, by the operation of the accelerator pedal or button 1which moves the arm l3 and the cam member I3 and also by operation ofthe manually controlled button IT at the dash which produces movementsof the wire I3 and the arm l4 connected with the cam followers 23 on thesupport 2|, the amount of liquid introduced into the Venturi portion ofthe carburetor at 49 depends not only upon the power output beingdeveloped by the engine, but also upon the conditions existing in theengine and upon the grade of fuel being used. Those factors may becompensated for by a movement of the button II which determines therange of power output over which the liquid is supplied in addition tothe supply and metering of the liquid as controlled by the operation ofthe button I.

It will be appreciated by one skilled in the art that other changes maybe made in the apparatus withoutdeparting from the spirit and scope ofmy invention as deflned by the appended claim.

What I; claim and desire to protect by Letters Patent is:

Apparatus for controlling the supply of varying amounts of asupplementary liquid to the main stream of fuel-air mixtures flowing toa power generating device, such as an internal combustion engine,comprising a casing, valve memberstherein for respectively opening andclosing, and also varying the amount of opening of, passages between theintake and outlet of said casing, said varying valve member beingadjustable relative to said closing valve member, a flexiblebellows-like separator within said-casing, a spring within saidseparator for maintaining said valve members in inactive positions, andcam members, one of which consists of a cam having an inclined portion,and the other of which consists of a follower therefor, one of saidmembersbeing adapted to be connected with a manually operated throttlecontrol device, and the other member being adapted to be connected withan independent manually operated control member that determines theamounts of the supplementary liquid to be added to the fuel-air mixturepassing to the power device.

LEO B. KIMBALL.

